CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Jun. 30, 2012	Jun. 30, 2011
Net of allowance for doubtful accounts on trade receivables (in dollars)	$ 15,102	$ 15,383
Common stock, par value (in dollars per share)	$ 1	$ 1
Prior cumulative preferred stock - Series A
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, liquidation preference value (in dollars)	2,130,000	2,100,000
Prior cumulative preferred stock - Series B
Preferred stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, liquidation preference value (in dollars)	2,085,000	2,055,000
Cumulative preferred stock - Series A
Preferred stock, par value (in dollars per share)	$ 20	$ 20
Preferred stock, liquidation preference value (in dollars)	4,843,598	4,785,065
Cumulative preferred stock - Series B
Preferred stock, par value (in dollars per share)	$ 20	$ 20
Preferred stock, liquidation preference value (in dollars)	$ 789,360	$ 779,821